diff --git a/README.md b/README.md
index 84cec18a..65e6e30a 100644
--- a/README.md
+++ b/README.md
@@ -124,7 +124,7 @@ section below.
 ``` bash
 cd shadowsocks-libev
 sudo apt-get install --no-install-recommends build-essential autoconf libtool libssl-dev \
-    gawk debhelper dh-systemd init-system-helpers pkg-config asciidoc xmlto apg
+    gawk debhelper dh-systemd init-system-helpers pkg-config asciidoc xmlto apg libpcre3-dev
 dpkg-buildpackage -b -us -uc -i
 cd ..
 sudo dpkg -i shadowsocks-libev*.deb